The London, Edinburgh and Dublin philosophical magazine and journal of science . POSITION OF PRISM FOR PHASE-REVERSAL REFLECTION. ttT u I ! POSITION OF 11 iPRISM REFLECTION FOR U i WITHOUT PHASE REVERSAL ill! m In order to give some idea of the relative intensities of thefocal images produced by the plate with and without a phase-reversal, I photographed an incandescent lamp-filament, firstfrom the outside surface of the zones and then from theinside, by the arrangement shown in fig. 2. The time of and Diffraction Telescopes. 521 exposure and development was the same, and both were takenon the
The London, Edinburgh and Dublin philosophical magazine and journal of science . POSITION OF PRISM FOR PHASE-REVERSAL REFLECTION. ttT u I ! POSITION OF 11 iPRISM REFLECTION FOR U i WITHOUT PHASE REVERSAL ill! m In order to give some idea of the relative intensities of thefocal images produced by the plate with and without a phase-reversal, I photographed an incandescent lamp-filament, firstfrom the outside surface of the zones and then from theinside, by the arrangement shown in fig. 2. The time of and Diffraction Telescopes. 521 exposure and development was the same, and both were takenon the same plate. Reproductions of the two images areshown in fig. 3. It will be noted that the brilliant one Fiar. 3.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectscience, bookyear1840
